JS统计一篇文章中英语单词出现的次数

因为刚好要写一个这样的代码，总结了前人的代码，结合了自己的知识，rt

可以保存一个excel文件

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <title> 页面名称 </title>
</head>
<body>
<textarea id="text" rows="30" cols="220">

</textarea><br/>
<input type="button" value="统计" onclick="word();" /><br />
<script type="text/javascript">
    var text = document.getElementById("text");
    function word() {
        var arr = text.value.match(/[\w\-]+/g) || [];
        console.log(arr);
        var k = {}, p = {};
        for (var i = 0; i < arr.length; i++) {
            var v = arr[i].toLowerCase();
            if (k[v]) {
                k[v]++;
            } else {
                k[v] = 1;
            }
        }
        function sortObj(obj) {
            var arr = [];
            for (var i in obj) {
                arr.push([obj[i],i]);
            };
            arr.sort(function (a,b) {
                return b[0] - a[0];
            });
            var len = arr.length,
                obj = {};
            for (var i = 0; i < len; i++) {
                obj[arr[i][1]] = arr[i][0];
            }
            return obj;
        }
        k = sortObj(k);

        function f1(k) {
            if(k == null) {
                k = {};
            }
            var title=['单词','个数'];
            JSONToExcelConvertor(k,"report",title); 
        };
        f1(k);
    }

</script>
<script>
        function JSONToExcelConvertor(JSONData, FileName,title,filter) {  
        if(!JSONData)
            return;
        //转化json为object
        var arrData = typeof JSONData != 'object' ? JSON.parse(JSONData) : JSONData;  

        var excel = "<table>";      

        //设置表头  
        var row = "<tr>";  

        if(title)
        {
            //使用标题项
            for (var i in title) {  
                row += "<th align='center'>" + title[i] + '</th>';
            }  

        }
        else{
            //不使用标题项
            for (var i in arrData[0]) {  
                row += "<th align='center'>" + i + '</th>';
            } 
         }

            excel += row + "</tr>";  


        var row='';
        for (var index in arrData) {
            row += "<tr>";  
            row += "<td align='center'>" + index + "</td>"
            row += "<td align='center'>" + arrData[index] + "</td>"; 
            row += "</tr>"
              
        }  

        excel += row;  
        
                excel += "</table>";  
                var excelFile = "<html xmlns:o='urn:schemas-microsoft-com:office:office' xmlns:x='urn:schemas-microsoft-com:office:excel' xmlns='http://www.w3.org/TR/REC-html40'>";  
        excelFile += '<meta http-equiv="content-type" content="application/vnd.ms-excel; charset=UTF-8">';  
        excelFile += '<meta http-equiv="content-type" content="application/vnd.ms-excel';  
        excelFile += '; charset=UTF-8">';  
        excelFile += "<head>";  
        excelFile += "<!--[if gte mso 9]>";  
        excelFile += "<xml>";  
        excelFile += "<x:ExcelWorkbook>";  
        excelFile += "<x:ExcelWorksheets>";  
        excelFile += "<x:ExcelWorksheet>";  
        excelFile += "<x:Name>";  
        excelFile += "{worksheet}";  
        excelFile += "</x:Name>";  
        excelFile += "<x:WorksheetOptions>";  
        excelFile += "<x:DisplayGridlines/>";  
        excelFile += "</x:WorksheetOptions>";  
        excelFile += "</x:ExcelWorksheet>";  
        excelFile += "</x:ExcelWorksheets>";  
        excelFile += "</x:ExcelWorkbook>";  
        excelFile += "</xml>";  
        excelFile += "<![endif]-->";  
        excelFile += "</head>";  
        excelFile += "<body>";  
        excelFile += excel;  
        excelFile += "</body>";  
        excelFile += "</html>";  

        var uri = 'data:application/vnd.ms-excel;charset=utf-8,' + encodeURIComponent(excelFile);  

        var link = document.createElement("a");      
        link.href = uri;  

        link.style = "visibility:hidden";  
        link.download = FileName + ".xls";
        document.body.appendChild(link);  
        link.click();  
        document.body.removeChild(link);  
    }  

</script>
</body>
</html>

运行结果如图，点击统计按钮之后，会下载一个report.xls的excel文件，里面内容是单词个数的排序

js统计英语单词的个数

总结

js其实是一门非常强大的语言，好好学习天天向上。

js统计英语单词的个数

JS统计一篇文章中英语单词出现的次数

总结

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